Someone ! i’m having trouble and this is graded

What is not true about kl and mn? what is mn? (show your work)

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

Question 3(multiple choice worth 1 points) use the arc length formula and the given information to find r. s = 16 cm, θ = 48°; r = ? sixty divided by pi cm thirty divided by pi cm one third cm one hundred twenty divided by pi cm